12501521003 has 2 divisors, whose sum is σ = 12501521004. Its totient is φ = 12501521002.

The previous prime is 12501520981. The next prime is 12501521017. The reversal of 12501521003 is 30012510521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12501521003 - 2¹⁴ = 12501504619 is a prime.

It is not a weakly prime, because it can be changed into another prime (12501521083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250760501 + 6250760502.

It is an arithmetic number, because the mean of its divisors is an integer number (6250760502).

Almost surely, 2^12501521003 is an apocalyptic number.

12501521003 is a deficient number, since it is larger than the sum of its proper divisors (1).

12501521003 is an equidigital number, since it uses as much as digits as its factorization.

12501521003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The spelling of 12501521003 in words is "twelve billion, five hundred one million, five hundred twenty-one thousand, three".